Shares of Nokia are unchanged on the day.

Nokia is making a major bet to get back to relevance in consumers' minds with its latest smartphone offering, which is powered by Microsoft's ( MSFT) Windows operating system.

The Lumia was first announced at the 2012 Consumer Electronics Show. Nokia is increasingly focused on regaining market share in China, as it tries to fend off Apple ( AAPL) and Google ( GOOG). According to research firm Gartner, Nokia had 19.6% of the Chinese handset market at the end of the fourth quarter, as Samsung has surpassed it, with a 24.3% share.

The Lumia will be available on the AT&T ( T) network exclusively in the U.S, and will be available through China Telecom ( CHA) in China.

TheStreet will have a review of the Lumia 900 late on Tuesday.

Shares of Nokia are flat on the day, trading at $5.47. Shares are up 13.5% year-to-date.